Galvanic battery



(NQMOaeL) J. P. WOLLENSAK & W. E GILL.

GALVANIO BATTERY.

No. 436,516. Patented Sept. 16. 1890.

UNITED STATES PATENT OFFICE.

JOHN F. NVOLLENSAK AND WVILLIAM E. GILL, OF CHICAGO, ILLINOIS.

GALVANIC BATTERY.

SPECIFICATION forming part of Letters Patent No. 436,516, datedSeptember 16, 1890.

Application filed May 13, 1890. Serial No. 351,685. (No model.)

To all whom it may concern.-

Be it known that we, J OHN F. WoLLENsAK and \VILLIAM E. GILL, citizensof the United States, residing at Chicago, Illinois, have inventedcertain new anduseful Improvements in Open-Circuit Batteries, of whichthe following is a specification.

In the drawing we have represented a vertical longitudinal section of ajar and a porous cup containing granulated carbon sus pended in the jar.

Heretofore it has been the general practice to set the porous cupcontaining the granulated carbon in the jar so that it rested upon thebottom of the same. The fluid with which the jar has been filled wasthus prevented from flowing beneath the porous cup and acting upon itfrom the bottom as well as from the sides. It has also been a generalpractice to flow wax over the top of the porous cup to I seal and closethe saine. The wax has been depended on to hold the carbon stick inposition and the head or end of the stick has usually been employed as ahandle to lift the porous cup in and out of the jar. As it was held inplace only by the wax, this would frequently be insufficient to sustainthe weight of the porous cup, particularly when the porous cup becomesfilled with the solution. The wax would break, the carbon stick pullout, and the cup be rendered practically worthless. 'We propose by ourimprovements to obviate both of these objections.

In making our improvements we provide a jar with an inwardly-projectingrim or flange A, which may extend entirely around the interior of themouth of the jar and be formed as a part of it when the jar is made. Theporous cup is made with a correspondingly outwardly-extending rim orflange B, which rests upon and fits against the inwardly-projecting rimof the jar. Of course at the place Where the spout O is formed in thejar the rim A would be unnecessary and dispensed with. \Vhen the porouscup is arranged in the jar, it is suspended at a desired distance fromthe bottom and its outwardly-extending rim rests upon theinwardly-extending rim of the jar.

This would permit the fluid with which the jar is filled to entirelysurround the cup on all sides and atthe bottom as well, so thatits mostadvantageous and beneficial effects will be obtained.

Thecarbon stick is provided with ahole D, and the cup is also providedwith holes E, corresponding to thehole in the carbon stick. In order tosecurely attach the carbon stick to the cup, a pin F of some nonconducting material, preferably wood, is inserted through the holes inthe cup and the hole in the carbon stick, which are preferably madesomewhat elongated to facilitate the insertion of the pin. The stick isthen drawn up to its highest position and the wax poured over the top ofthe cup and of the carbon stick, as in the present jar. When the head orprotruding end of the carbon stick is grasped and the cup lifted, theweight will of course be received by the pin instead of by the wax, sothat all possibility of the breaking away of the wax and the ruin of thecup is obviated.

What we regard as new, and desire to secure by Letters Patent, is'- Inopen-circuit batteries, the combination of a cup having holes throughits sides, a carbon stick having a hole in a position. and direction tobe brought in to a line with the holes in the cup, and a pin ofnon-conducting material passing through the holes in the cup and stick,substantially as described.

JOHN F. WOLLENSAK. WILLIAM E. GILL. Vitnesses:

LATHROP P. FARNHAM, GEORGE S. PAYSON.

